I'm turning a conrod from a BDMS square bar. The round part will be vary from 6 - 8mm over its length. It's fat in the middle.
I'm using the topslide for the taper, bad mistake as I've denied myself access to fine feed the tool.
Anyway with very light cuts, super sharp HSS tool and lots of cutting oil, the tool is still picking up occasionally and spoiling an otherwise nice finish. The tool is "standard" pattern with a round nose 1/8 inch radius.
I'm running the spindle at 1000rpm. Faster doesn't seem to help. Is this as good as its going to get?